TY  - GEN
AU  - Dorofeev, G.
AU  - Rozov, N.
AU  - Potapov, M.
TI  - Elementary mathematics: selected topics and problem solving
SN  - 8123908423
U1  - 510 
PY  - 1973///
CY  - New Delhi
PB  - CBS publishers
KW  - Mathematics
ER  -